Improvement in waterproofingtextile fabrics



pounds of water;

UNITED 4STATES PATENT OFFICE.

`BENJAMIN WEIGERT, OF NEW YORK, N.I Y.

IMPROVEMENT IN'WATERPROOF'I'NGWTEXTILE FABRICS.

Specification forming part of Letters Patent No. 15,585, dated August19, 1856.

` To all whom/ it may concern:

Be it known that I, BENJAMIN WEIGEET, of the city, county, and State of New York, have invented a new and Improved `Mode of Waterproofing Textile Fabrics; and I do hereby declare that the following is a full and exact description thereof. The nature of my invention consists in permanently obstructing the water-passages of textile fabrics withmolecules of aluminium enveloped in glue, making the fabric permanently-that is, even after repeated washingimpermeable to Water,

without changing any of' its ordinary properties or its permeability to air.

' Y I proceed as follows: I dissolve tive ounces of acetate of lead in eight .pounds of water, and likewisellive ounces of alum in eight in separatevessels. On pouring the 'solutions together sulphate'of lead is precipitated, the supernatant fluid being a solution of the acetate of alumina, which lat-ter alone I pour off for use in a proper vessel. I then boil in' two separate earthen pots two pounds of water with one ounce of caustic soap, also added to the latter two ounces of alum, while in ebullition I pour the two solutions-that is, the soap and the glue solutionstogether, and leave the mixture to cool, and when cool I add it to the above lsolution of acetate of alumina, when the composition is ready for use.

I do not pretend to establish i't'as an abso` lute fact, but the eects fully warrant the theory that the molecules of aluminium suspended inthesolution of the acetate of alu-` mma, on pouring above described, become each of them enveloped in glue partially coagulated.- Any textile fabric being then'treated'with my compo-v sition, those moleculeswill lodge in into the solution of glue,

the pores and intersticesV sufiicient of the-texture with adhesion not to Ibe carried away by thejordinary pressure of water, and thus tooppose its passage by reverting the hydrostaticmelation 0f the capillary vessels In all the methods hitherto" attempted to of the fabric.

the same quantity of warA ter with one ounceof glue, and. after having waterproof textile fabrics by the applicationfl of metallic solutions the aluminium, as such,4

'has never been tried,I and' in no case the use of glue in the manner and for the purposes as explained has been thought of. The effect is striking. While in all heretofore-'knownl thereby their water-proof quality destroyed or impaired.

The treatment of the fabrics 1s sImple 1m-A me'rsion in the composition, a sufficientrins'fv ing, working, and squeezing, ac oordingtothe nature of the fabric treated,

ough imbibiness of the liquid, and after thorough drying in the open air the usual iron ing, which has to be preceded by the equally usual water-,sprinkling or dew.

Ifdo not enlarge upon the advantages 0I my method of waterproofing. '.lheyarefar-sur-'v known methods from what passing any of the has been stated above; vbut I'cannot omlt vrto point out the equity of cost for materialsiras well as for manual labor required in my pro` cess, when compared with any of the processes heretofore knownor used.

What I claim as my invention`,'and desire to Y secure by Letters Patent, isetion of'acetate of alumina and" glue, I prepared in the manner and from the ingredIents and proportions stated, and for the` purposes speeled.

In testimony whereof -I have hereunto signed my name beforetw'o subscribing witnesses.

y BENJAMIN WEIeEinr Witnesses:

' VJosErII KLEINDIENST,

CHAsnWaLTER.

to insure a thor# The treatment 4of textileiabricswitha solu 

